Paper-sheet-feeding machine.



G. SPIBSS.

PAPER SHEET FEEDING MACHINE.

APPLICATION FILED DEC. 20 1913.

Patented Maf.24,1914.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH 60.. WASHINGTON. n c,

G. SPIESS.

PAPER SHEET FEEDING MACHINE.

APPLIOATION FILED DEG. 20, 1913.

1,091,444. Patented Mar. .24, 1914 2 SHEETS-SHEET 2.

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' a a W-aL-aM md COLUMBIA PLANOGRAPH 60.,wAsmNo'rov D c UNITED STATE PATENT @FFIQE.

GEORG SPIESS, OF LEIPZIG-REUDNITZ, GERMANY.

PAPER-SHEET-FEEDING MACHINE.

Application filed December 20, 1913.

To all whom it may concern Be it known that I, Gnonc Srinss, residing in Leipzig-Reudnitz, Germany, have invent ed certain new and useful Improvements in Paper- Sheet Feeding Machines, of which the following is a specification.

In paper sheet feeding mechanism in which the uppermost sheet of the pile is advanced by combing wheels, the combing wheel which has advanced the sheet to a determined point must be at once raised from the working surface in order to enable the sheet to be correctly adjusted prior to its continued delivery. This adjustment is initiated by a feeler which is raised by contact with the edge of the advancing sheet. The raising of the combing wheel is then effected under the action of a powerful spring, that is to say, abruptly, and since the individual parts of the mechanism are not all in direct connection with one another, their connection must be reestablished during each rotation. Owing to these defects it was hitherto impossible to increase the speed of the sheet adjusting mechanism beyond per minute.

Now according to this invention the lever arm from which the feeler is flexibly suspended is to be locked by one member of a toggle lever. That member carries a roller, adapted to bear on a correspondingface of the feeler carrier so that the whole movement of throwing the combing wheel in and out of action is efiected under the influence of a closed lever mechanism of which all individual levers which are not directly connected one to another are forcibly held in contact under the action of a spring or the like.

The accompanying drawing illustrates a preferable construction of this invention.

Figure 1 is an elevation of the sheet feeding mechanism in the operative position of the combing wheels. Fig. 2 shows the same view with the parts in the position in which the combing wheel has been raised from the working surface. Fig. 3 is an illustration of the parts viewed from right to left in Fig. 2, and Figs. at to 6 represent the re leasing means in three different positions on a somewhat enlarged scale.

The mechanism is adapted to transfer in a known manner by means of combing wheels A individual sheets from a pile of sheets supplied by means of a known supply roller, to transfer rollers. The comb- Specification of Letters Patent.

Patented Mar. 2a. 1914.

Serial No. 808,020.

ing wheels A are constantly rotated by a toothed gearing likewise in a known manner and to be raised or lowered by means of an arm G engaging with the end of a lever B. Now in order to render the combing wheel A inoperative, that is to say, in order to actuate the levers B, C and D, according to this invention, a toggle lever E, F, is used which is arranged under the action of a spring G. Normally, as shown in Fig. 1, this spring is in tension or cocked. The feeler I is in a known manner flexibly suspended from a lever arm H and the latter in the present instance is adapted to lock the toggle lever E, F, when its toggles are in stretched condition. As shown, the lever H is provided with a spring-actuated pin or like member K which is adapted when the parts are in their normal position (see Fig. at) to engage with the edge of a lug L forming an offset extension of the toggle F. These locking members are held in contact with one another by means of a traction spring L, of which one end is attached to the lug L and the other to a lug N on the lever H, and this spring has the function to hold the lugs L and N in contact with one another at all times during the raising or lowering of the combing wheels. To this end the lug L carries a roller M and the lug IT is provided with an oblique face so that the roller M is in contact with this oblique face, as shown in Fig. 6, even after the engagement between the locking parts K and L has been released. This yielding connection of the two locking parts is of course without any effect upon the movement of the feeler I which as shown is freely connected to the arm H. "When the feeler I is tripped up by the edge of a sheet advanced by the combing wheel A, its free end is in a known manner brought into engagement with a toothed disk 0 mounted on a constantly rotating shaft P and by this engagement the lever H is rocked so as to release the locking members K and L and accordingly the toggle lever E and F to the action of the spring G which tends to stretch the toggles and thereby to raise the combing wheel. In this action the roller M moves along the inclined face on the lug N until the position indicated in Figs. 2 and 6 is attained.

The resetting of the parts and the cocking of the spring G is effected according to this invention from a shaft Q by means of a cam B. By preference, the cam R may be mounted on the same shaft carrying the cam disk S which is adapted to actuate the lever T arranged to adjust the upper transfer roller U. The arrangement according to this invention has-the advantage of enabling a yielding mechanical connection between the toggle lever and the feeler carrier to be permanently maintained and therefore the raising and lowering movement of the combing wheels to be effected without any shocks and consequently the speed of the sheet feeder to be raised if desired to 150 revolutions per minute.

What I claim and desire to secure by Letters Patent is:

1. A paper sheet feeding device comprisingin combination a combing roller, means associated therewith for raising same, a lever arm, a flexible feeler suspended therefrom, a toggle lever having one end in operative contact with said raising means and the other adapted to bear against said lever arm,'a spring exerting tension on said toggle lever, and locking means carried on said lever arm for holding the toggles of said toggle lever normally extended and the combing roller in its lowered position.

2. A paper"sheet feeding device comprising in combination a combing roller, a carrier member having a flexible feeler mount ed thereon, levers adapted to raise said combing roller, a toggle lever having its lever ends in contact with said carrier and said first mentioned levers respectively, a traction spring tending to hold said toggles contracted, and locking means on said carrier for maintaining said toggles in their extended position and the combing wheel in its lower position.

3. The combination with a paper sheet feeding device having a combing roller and a flexible feeler, of means initiated by said feeler for raising and lowering said combing roller comprising a carrier for said flexible feeler, lever arms associated with said combing wheel, a toggle lever coacting with said lever arms and said carrier, a spring connected to said toggle lever and tending to hold said toggles in their contracted position, locking means mounted on said carrier and adapted to normally hold said toggle lever in its extended position against the tension of the traction spring.

l. A paper sheet feeding device comprising in comblnation, a combing roller, means associated therewith for raising same, a le er arm, a flexible feeler suspended therefrom, a toggle lever having one end in operative contact with said raising means and the other adapted to bear against said lever arm, a spring exerting tension on said toggle lever, locking means carried on said lever arm for holding the toggles of said toggle lever normally extended and the combing'ro-ller in its lowered position, said locking means adapted to be released by the action of the flexible feeler, whereupon said toggles are contracted and said combing roller is raised, and means coacting with GEORG SPIESS.

Witnesses PAUL Sonnncxnnsenncnn, RUDOLPH FRIGKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Eatente. Washington, D. C. 

